Somerset County, New Jersey
Local growing conditions for Somerset County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 27 ZIP codes in our data.
Hardiness zones in Somerset County
Somerset County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Somerset County for its live forecast, frost dates, and planting calendar:
Millington 07059
Watchung 07069
Lyons 07920
Bedminster 07921
Bernardsville 07924
Far Hills 07931
Peapack and Gladstone 07934
Lyons 07939
Peapack and Gladstone 07977
Harlingen 08502
Kingston 08528
Rocky Hill 08553
Blawenburg 08558
Bound Brook 08805
Green Knoll 08807
Dunellen 08812
Flagtown 08821
Pleasant Plains 08823
Manville 08835
Martinsville 08836
Hillsborough 08844
Neshanic Station 08853
Raritan 08869
Middlebush 08873
More for New Jersey
- Agriculture in New Jersey
- Frost dates across New Jersey
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.